參數(shù)資料
型號(hào)： SI850X
廠商： Silicon Laboratories Inc.
英文描述： UNIDIRECTIONAL AC CURRENT SENSORS
中文描述： 單向交流電流傳感器
文件頁(yè)數(shù)： 1/24頁(yè)
文件大?。?/td> 262K
代理商： SI850X
Preliminary Rev. 0.1 7/07
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Silicon Laboratories Confidential. Information contained herein is covered under non-disclosure agreement (NDA).
Copyright 2007 by Silicon Laboratories
Si85xx
Si85xx
Si85
XX
UNIDIRECTIONAL
AC
CURRENT
SENSORS
Features
Applications
Description
The Si85xx products are unidirectional ac current sensors available in full-
scale ranges of 5, 10, and 20 A. Si85xx products are ideal upgrades for
older current-sensing technologies offering size, performance and cost
advantages over current transformers, Hall effect devices, DCR circuits
and other approaches. The Si85xx are extremely low loss, adding less
than 1.3 m
Ω
of series resistance and less than 2 nH series inductance in
the sensing path at 25 oC. Current-sensing terminals are isolated from the
other package pins to a maximum voltage of 1,000 VDC.
Functional Block Diagram
Single-chip ac current
sensor/conditioner
Low loss: Less than 1.3 m
Ω
primary series resistance;
less than 2 nH primary
inductance at 25 oC
Leading-edge noise suppression
eliminates need for leading-edge
blanking
"Ping-Pong" output version
allows one Si85xx to replace two
current transformers in full-bridge
applications
5, 10, and 20 A full-scale versions
FAULT output helps safeguard
operation
1,000 VDC isolation
Accurate to ±5% of measurement
Large 2 V
PP
output pins signal at
full scale
High-side or low-side current
sensing
–40 to 125 oC operating range
(Si85x4/5/6)
Small 4 x 4 x 1 mm package
Low cost
Power supplies
Motor controls
Lighting equipment
Industrial equipment
Typical Application
VDD
VOUT
IIN
IOUT
L
C
Q1
Q2
PH1
PH2
R1
OUT
VDD1
GND2
VIN
Si850x
TRST
R2
Si851x
M
VDD
TRST/FAULT
IOUT
IIN
GND
INTEGRATOR
SIGNAL CONDITIONING
ADC
AUTO CALIBRATION
LOGIC
TEMP
SENSOR
OUT1
OUT2
MODE LOGIC
MODE
R1
R2
R3
R4
RESET LOGIC
GND1
Patents pending
Pin Assignments:
See page 20
12-Pin QFN
Si850x
1
R1
R2
GND2
GND3
OUT
NC
T
G
V
V
IIN
IOUT
Si851x
1
R1
R2
R3
R4
OUT1
OUT2
T
G
M
V
IIN
IOUT
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